👉 In mathematics, a supernumerary number is a number that is not defined or counted among the natural numbers. These are numbers that are not divisible by any of the natural numbers less than their value. For example, 7 is a supernumerary number because it is not divisible by 1, 2, 3, 4, 5, 6, 7, and 8. Similarly, 9, 10, 11, 12,